Improvement in apparatus for burning and revivifying bone-black



l. GANDULFU. Apparatus for Burning and Bevivifying Bone-Blalck,&c.

l mmm: 17m/WWW;

N-FETERS. FHTD-LITG'GRAPHER. WASHINGYON. D. CV

UNrrED S'rAfrns JOSEPH GANDOLFO, OF BROOKLYN, NEV YORK.

IMPROVEMENT IN APPARATUS FOH'BURNING AND REVIVIFYINGBONE-BLACK. &cr.

Specification formingpart of Letters Patent No. ll65,992, dated July 27, 1875 application liled July 9, 1575.

To all whom it may concern:

Beit known that I, J osEPH GANDoLFo, of Brooklyn. in the county ot' Kings and State of New York, have invented a new and Improved Apparatus for Burning and Revivifying Bone-Black, 85e., of which the following is a specification:

Figure l is a vertical cross-section of a furnace provided with my invention. Fig. 2 is a detail longitudinal section of part of the saine. Fig. 3 is a top view on a larger scale than the other figures of the socket, in which the lower ends of the burning retort and interior smoke-lineare secured.

Similar letters of reference indicate correspending parts in all the figures.

The object of this invention is to produce an apparatus for more rapidly and thoroughly burning or revivit'ying the animal charcoal, bone-black, soda, or other substance, than could heretofore be done.

My invention consists in a peculiar construction ot' socket that receives the lower ends of the retort and of a central smoke-flue, and conducts the products' ot' combustion into said central smoke-due, all as hereinafter more fully described.

I am aware that pipes have already been passed lengthwise through the vertical retorts of revivifyin g apparatus, but such pipes were to my -knowledge never connected at their lower ends with lthe improved socket invented by ine.

In the drawing, and especially in Fig. 1, the body of the furnace is represented by dotted lines, the grate being also shown, and the course ofthe products of combustion being indicated by arrows having round points, the pointed arrows indicating the course of the bone-black or other substance to be burnt. Along each side ot' the furnace are erected twelve, more or less, retorts, A A, for receiving at their upper ends the bone-black to be burned or revivitied, and discharging the saine at their lower ends. A llue or central pipe, B, extends vertically through .each retort, A, but connects at its upper end by an elbow, a, or otherwise, with the chimney of the furnace. In horizontal section the pipes B and retorts A may be of oval, polygonal, circular, or other suitable form. The lower end of each retort A rests on a socket C, which is a short pipe of about the same form and size of cross-section as the retort, but made with a flange, b, at its upper end, and with a step for supporting the lower end of the retort. The flange b embraces the lower part of the retort, asr shown in Figs. l and 2. The lower end of the socket O rests on a suitable plate, which is shown by dotted lines in Figs. l and 2, and whichv is built into the furnace, being perforated to allow the bone-black or other substance which is dropped through the retort and through the socket `C to enter a suitable receptacle. The socket is traversed centrally by a hollow bridge or partition, d, which is open on top and closed at the bottom, and which constitutes the support and lower extremity ofA the-flue B, as shown. A hole, c, is made through the side of the socket into the end of the hollow bridge or partition d to allow the products of combustion from the furnace to enter the bridge or partition d, and the flue B. I prefer to so place the socket that the hole e will be as far away as possible from the grate ot" the furnace. rIhe socket may be made with more holes c than one, if desired. Opposite the hole e the hollow bridge d has a hand-hole, closed by a plate, j', to permit the cleaning of the said bridge or partition. A hand-hole is also, by preference, formed in the elbow a of the flue B, as indicated at g in the drawing, to permit the ready cleaning of the due.

In operation, the llames ot the furnace pass l over tire-walls to the retorts, and play around the retorts, so as to heat their contents. The dames or products of combustion then enter the sockets G O through the holes e of the partitions dtherein, and ascend through the lues B B, whence they escape into the chimney. Thus it is thatthe products of combustion affect both the outer and the inner walls of the retorts, whereby a more complete, equal, and rapid burning or revivit'ying of the boneblack 0r other substance can be accomplished than by the apparatus now in use. The boneblack or other substance is fed into the open upper end of the annular retort, and in passing down into and through the socket 4O is burnt or revivifled in the desired manner. Suitable shelves, ribs, or other detaining devices may, if desired, be arranged withineach sage e that leads linto the hollow bridge,.snb retort. :lstantially as `herein shown andrdescribed.

'My invention is also applicable to the burn- 2;"The combination ofthe retort A and pipe ing or heating ofsoda in its manufacture. B with the socket C, which has the hollow I claim as my inventionbridge or partition d, substantially as herein 1. The socket 0, open on top and bottom, shown and described. to constitute afisupporteior yandi avcontiunation of the retort A, and provided with the JOSEPH GANDOLFO. hollow bridge d, which isopenmontop, .and Witnesses: supports' the lue' B, and is closed vat :the A. VJBRIESEN,

bottom, and with the aperture or smokepas- E. G. WEBB. 

